Electric condenser



Jan. 26, 1932.. H. B ARTEL nmac'mxc commusna Fil ed Sept. 10. 1928 llu'tented dart. ldfi, lldfll ldihlt'tltlillh, Uh lillERlLThl', GERMANY,ASSTGTNUR It'll SIEMENfi & HAT'SKE AKTIETKF- GJESELLQUHAFT, 01FSIEMJENESTADT, NEAR BERLIN; GEBMANY I JELIEC'IllEtTU GUNDENSER.tlpplication filed September l0, 1928, Serial No. 305,140, and inGermany September 16, 192?.

Tt is quite generally known that condensers of high capacity consistentwith small volume may be manufactured by coatingthe metal conductors ofthe condenser with a dielectric p in fluid form. This coating in thepast has been allowed to dry, after which the conducting layers werebrought into their final shape by rolling or forming. In a condensermanufactured in this manner there is a pos- 1n sibility of moisturepenetratinginto the interior of the roll and in addition a specialbinder for holding the roll must be provided.

The present invention overcomes the objections to the former process andconsists l5 of the coating of the conducting layers of a condenser withcellulose-ether and in rolling the whole into a rigid mass before thecoating gets solid.

This causes the various layers of the roll 2a to be intimately connectedand thus form a non-hydroscopic, completely enclosed mass which canonlybe severed by damaging the parts, and consequently the penetration ofmoisture into the interior of the roll is effec- 25 tively prevented.

According to the invention the coated layers are preferably partly driedbeforehand so that the layers adhere together immediately on beingcoiled up, whereupon after reaching 3a the desired size, they arepressed, and, due to the adhesive action form a solid moisture proofmass.

The process-of manufacturehas been diagrammatical-ly 0 illustrated inthe accom- 5 panying drawings,in which Fig. 1 illustrates the manner ofapplying the dielectric to the condenser elements, as well as the mannerof.

winding; while Fig. 2 shows front and top views of the condensercomplete.

The rolls 2 and 3 represent the source of supply of the condenserelement material, which is drawn thru a container 4 of cellulose-etheras it is wound on an arbor 5. When sufficient of the condenser materialhas been wound upon the arbor to produce a condenser of the desiredcapacity the condenser is simply torn or, removed from the arbor, andcompressed into the form shown in Fig. 2, before the coatin 59 forming asoli moisture-proof condenser.

has completely dried,'thereby ll claim:

1. The process of manufacture of condensers consisting in the coating ofthe conduc tive layers with a solution of cellulose-ether, exposing thecoated layers to the atmosphere until partly solidified and in thenrolling the layedrs into a mass before the coating becomes soli 2. Theprocess of manufacturing condensers consisting of coating the conductivematerial with an air drying insulating material, exposing the coatedmaterial tothe at mosphere until partly solidified and in then rollingthe coated material into a mass before the insulating material has fullydried so that when :drying is" completed the condenser will be a solidmass.

3. The process of manufacturing an electric condenser, which consists ofcoating the elements of the condenser in a dielectric, bringing theelements into contact with air under normal temperature until thedielectric is partly solidified and of thereafter winding andcompressing the condenser elements into a concentrated mass beforesolidification occurs.

4. The process of manufacturing an electric condenser which consistssolely of coating the metallic elements of the cohdenser with an airdrying dielectric, and in'winding the elements into a single mass afterthe dielectric coating has become partly solidified.

In witness whereof, I hereunto subscribe my name this 15th day ofAugust, A. D. 1928.

p HANS BARTEL.

